| Issuer: Tristan da Cunha
Issue: 100th Anniversary of Visit of HMS Challenger Date: 10/15/1973 (1973 sheets) Block 1 (4, 2 x 2) 1, 1: 4p d=Challenger's laboratory 1, 2: 5p d=H.M.S. Challenger off Tristan 2, 1: 7 1/2p d=Challenger off Nightingale Island 2, 2: 12 1/2p d=Map of Challengers voyage with instrument |
External links: Colnect 429752..sit_to_Tristan Record of changes |
